2102222121001 has 4 divisors (see below), whose sum is σ = 2115119189392. Its totient is φ = 2089325052612.

The previous prime is 2102222120969. The next prime is 2102222121007. The reversal of 2102222121001 is 1001212222012.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2102222121001 - 2⁵ = 2102222120969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2102222121007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6448533951 + ... + 6448534276.

It is an arithmetic number, because the mean of its divisors is an integer number (528779797348).

Almost surely, 2^{2102222121001} is an apocalyptic number.

It is an amenable number.

2102222121001 is a deficient number, since it is larger than the sum of its proper divisors (12897068391).

2102222121001 is a wasteful number, since it uses less digits than its factorization.

2102222121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12897068390.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2102222121001 its reverse (1001212222012), we get a palindrome (3103434343013).

The spelling of 2102222121001 in words is "two trillion, one hundred two billion, two hundred twenty-two million, one hundred twenty-one thousand, one".